She was then asked by another Twitter user to reveal the car's registration and plate number in order to prove it had happened.

The mother of two fired back: "I had both my hands full with children, couldn't get to my phone fast enough."

She responded to another person who said that it "definitely didn't happen", writing that they were "victim shaming" her.

Allen declined to comment when approached by the Press Association.

She was criticised following her visit to the Jungle, during which she volunteered in a warehouse where donations came in before being distributed to the thousands of migrants and refugees living there.

In scenes that aired on the BBC's Victoria Derbyshire programme, she broke down in tears while meeting a 13-year-old boy from Afghanistan who said his father lives in Birmingham but who himself had camped at the Jungle for two months.

During their meeting, Allen told him: "It just seems that at three different intervals in this young boy's life, the English in particular have put you in danger.

"We've bombed your country, put you in the hands of the Taliban and now put you in danger of risking your life to get into our country.

"I apologise on behalf of my country. I'm sorry for what we have put you through."

Allen's experience came a week after Ugandan-born British journalist Yasmin Alibhai-Brown said she was refused a ride in a taxi.